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Generalise fork choice tests.

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Age Manning
2019-02-19 14:37:17 +11:00
parent 8baae0e02e
commit 846cbdd7f7
5 changed files with 115 additions and 85 deletions
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13
eth2/fork_choice/src/lib.rs
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@@ -1,22 +1,20 @@
//! This crate stores the various implementations of fork-choice rules that can be used for the
//! beacon blockchain.
//!
//! There are four implementations. One is the naive longest chain rule (primarily for testing
//! purposes). The other three are proposed implementations of the LMD-GHOST fork-choice rule with various forms of optimisation.
//! There are three implementations. One is the naive longest chain rule (primarily for testing
//! purposes). The other two are proposed implementations of the LMD-GHOST fork-choice rule with various forms of optimisation.
//!
//! The current implementations are:
//! - [`longest-chain`]: Simplistic longest-chain fork choice - primarily for testing, **not for
//! production**.
//! - [`slow_lmd_ghost`]: This is a simple and very inefficient implementation given in the ethereum 2.0
//! specifications (https://github.com/ethereum/eth2.0-specs/blob/v0.1/specs/core/0_beacon-chain.md#get_block_root).
//! - [`optimised_lmd_ghost`]: This is an optimised version of the naive implementation as proposed
//! - [`optimised_lmd_ghost`]: This is an optimised version of bitwise LMD-GHOST as proposed
//! by Vitalik. The reference implementation can be found at: https://github.com/ethereum/research/blob/master/ghost/ghost.py
//! - [`protolambda_lmd_ghost`]: Another optimised version of LMD-GHOST designed by @protolambda.
//! The go implementation can be found here: https://github.com/protolambda/lmd-ghost.
//!
//! [`longest-chain`]: struct.LongestChain.html
//! [`slow_lmd_ghost`]: struct.SlowLmdGhost.html
//! [`optimised_lmd_ghost`]: struct.OptimisedLmdGhost.html
//! [`protolambda_lmd_ghost`]: struct.ProtolambdaLmdGhost.html
extern crate db;
extern crate ssz;
@@ -34,6 +32,7 @@ use types::{BeaconBlock, ChainSpec, Hash256};
pub use longest_chain::LongestChain;
pub use optimised_lmd_ghost::OptimisedLMDGhost;
pub use slow_lmd_ghost::SlowLMDGhost;
/// Defines the interface for Fork Choices. Each Fork choice will define their own data structures
/// which can be built in block processing through the `add_block` and `add_attestation` functions.
@@ -97,7 +96,7 @@ impl From<BeaconBlockAtSlotError> for ForkChoiceError {
}
/// Fork choice options that are currently implemented.
pub enum ForkChoiceAlgorithms {
pub enum ForkChoiceAlgorithm {
/// Chooses the longest chain becomes the head. Not for production.
LongestChain,
/// A simple and highly inefficient implementation of LMD ghost.